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MP2259 4.5-16V, 1A, 1.4MHz Step-Down Converter TSOT23
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pMPS MP2259 — step-down converter, 4.5-16V input, 1A output, 1.4 MHz, TSOT23./p
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MP2259 4.5-16V, 1A, 1.4MHz Step-Down Converter TSOT23
MPS MP2259 is a step-down converter that accepts 4.5 V to 16 V input, delivers 1 A, switches at 1.4 MHz, supplied in a TSOT23 package.
Key Specifications
| Part Number | MP2259 |
| Input Voltage | 4.5 V to 16 V |
| Output Current | 1 A |
| Switching Frequency | 1.4 MHz |
| Topology | Step-Down Converter |
| Package | TSOT23 |
| Ordering Codes | MP2259 |
Features
- 1A Output Current
- 0.5Ω Internal Power MOSFET Switch
- Stable with Low ESR Output Ceramic Capacitors
- Up to 92% Efficiency
- 0.1μA Shutdown Mode
- Fixed 1.4MHz Frequency
- Thermal Shutdown
- Cycle-by-Cycle Over Current Protection
- Wide 4.5V to 16V Operating Input Range
- Output Adjustable from 0.81V to 14V
Applications
- Hand Disk Drive
- xDSL Modems Cable
Design Notes
- The step-down topology needs an inductor and output capacitor sized for the ripple at the switching frequency, not just the DC load.
- Keep the input loop short — high di/dt at the switch node sets conducted EMI.
- Power switches are integrated, so the thermal path is the PCB copper under the pad.
- Package TSOT23 — check the land pattern in the datasheet before layout.
Common Questions
What is the input and output rating of the MP2259?
4.5–16 V input and 1 A output.
What switching frequency does the MP2259 run at?
1.4 MHz.
Which package is the MP2259 available in?
TSOT23.
Shenzhen Gaorunxin Technology Co., Ltd
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